i think president bush, president obama all had very deep conversations, president clinton, with nelson mandela. and they all took his example and tried to figure out how do they embody it. his legacy to the united states is huge as it is to the rest of the world. and i think he taught us that we need to rise above the petty politics that can divide us. and i think his lesson is more relevant today than ever and whether it's in congress or in syria that we can all learn from his example. >> marc, here's the thing, he was not afraid to speak truth to power. not just in his country but in this country as well. >> it's so critical to remember and understand the evolution of the relationship between the official position of the united states and the emerging republic of south africa. because in the 1970s and in the 1980s, united states official foreign policy sided with the apartheid regime. it was president reagan that vetoed sanctions which really came about because of student activism and community activism. i was proud to be a part of those efforts. the divestment efforts. that movement